Motor Overload Fault

What does OL1 mean?

This fault occurs when the motor current exceeds 110% of the value set in parameter E2-01 (Motor Rated Current) for a duration determined by L1-02 (Motor Overload Protection Time). It indicates the motor is drawing excessive current, risking overheating and potential damage if the condition is not resolved.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the motor for signs of overheating, damaged bearings, or winding issues such as shorts.

2. 4

   Ensure L1-01 (Motor Overload Protection Selection) is enabled and correctly set for the motor's cooling type (e.g., Standard Fan Cooled).

3. 5

   Measure motor winding resistance and insulation resistance to check for internal motor damage.